Bulgaria is a country situated in Southeast Europe that occupies the eastern quarter of the Balkan peninsula, being the largest country within its geographic boundaries. It borders Romania to the north, Serbia and North Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east. The northern border with Romania follows the river Danube until the city of Silistra. The land area of Bulgaria is 110,994 square kilometres (42,855 sq mi), slightly larger than that of Cuba, Iceland or the U.S. state of Tennessee. Considering its relatively compact territorial size and shape, Bulgaria has a great variety of topographical features. Even within small parts of the country, the land may be divided into plains, plateaus, hills, mountains, basins, gorges, and deep river valleys. The geographic center of Bulgaria is located in Uzana.
This is a list of the lists of islands in the world grouped by country, by continent, by body of water, and by other classifications. For rank-order lists, see the other lists of islands below.
The Rhodopes are a mountain range in Southeastern Europe, and the largest by area in Bulgaria, with over 83% of its area in the southern part of the country and the remainder in Greece. Golyam Perelik is its highest peak at 2,191 meters (7,188 ft). The mountain range gives its name to the terrestrial ecoregion Rodope montane mixed forests that belongs in the temperate broadleaf and mixed forests biome and the Palearctic realm. The region is particularly notable for its karst areas with their deep river gorges, large caves and specific sculptured forms, such as the Trigrad Gorge.
A tarn is a mountain lake, pond or pool, formed in a cirque excavated by a glacier. A moraine may form a natural dam below a tarn.
Struga is a town and popular tourist destination situated in the south-western region of North Macedonia, lying on the shore of Lake Ohrid. The town of Struga is the seat of Struga Municipality.
Rila is the highest mountain range of Bulgaria, the Balkan Peninsula and Southeast Europe. It is situated in southwestern Bulgaria and forms part of the Rila–Rhodope Massif. The highest summit is Musala at an elevation of 2,925 m which makes Rila the sixth highest mountain range in Europe after the Caucasus, the Alps, Sierra Nevada, the Pyrenees and Mount Etna, and the highest one between the Alps and the Caucasus. It spans a territory of 2,629 km2 with an average elevation of 1487 m. The mountain is believed to have been named after the river of the same name, which comes from the Old Bulgarian verb "рыти" meaning "to grub".
The Pirin Mountains are a mountain range in southwestern Bulgaria, with the highest peak, Vihren, at an altitude of 2,914 m (9,560 ft).
Pirin National Park, originally named Vihren National Park, encompasses the larger part of the Pirin Mountains in southwestern Bulgaria, spanning an area of 403.56 square kilometers (155.82 sq mi).
Serres is one of the regional units of Greece, in the geographic region of Macedonia. It is part of the Region of Central Macedonia. Its capital is the city of Serres. The total population reaches just over 175,000.
The Iskar is a right tributary of the Danube. With a length of 368 km, it is the longest river that runs entirely within Bulgaria. Originating as three forks in Balkan's highest mountain range Rila, the Iskar flows in a northern direction until its confluence with the Danube River. As it flows northwards it fuels the largest artificial lake in the country, the Iskar Reservoir, forms the divide between the Vitosha and Plana Mountains in the west and the Sredna Gora mountain range in the east before entering the Sofia Valley, which contains the nation's capital Sofia. From there the Iskar runs through the Balkan Mountains forming the spectacular 84 km long Iskar Gorge and as it crosses the mountains its water course turns in north-eastern direction at Lakatnik. North of the Balkan Mountains the river crosses the Danubian Plain and finally flows into the Danube between the villages of Baykal and Gigen. Geologically, Iskar is the oldest river in the Balkan Peninsula.
Srebarna Glacier on Livingston Island in the South Shetland Islands, Antarctica is situated east-northeast of Boyana Glacier, southeast of the head of Macy Glacier and southwest of Magura Glacier. It extends 2.3 km in southwest-northeast direction and 1.8 km in northwest-southeast direction, and drains southeast of Serdica Peak and the Great Needle Peak in Levski Ridge, Tangra Mountains to enter Bransfield Strait between Aytos Point and M'Kean Point.
The Seven Rila Lakes are a group of glacial lakes, situated in the northwestern Rila Mountain in Bulgaria. They are the most visited group of lakes in Bulgaria. The lakes are situated between 2,100 and 2,500 metres elevation above sea level.
Vihren is the highest peak of Bulgaria's Pirin Mountains. Reaching 2,914 metres (9,560 ft), it is Bulgaria's second and the Balkans' third highest, after Musala and Mount Olympus. Although due to the karst topography Vihren is deprived of lakes and streams, a number of Pirin's lakes are located around the peak, as is Europe's southernmost glacial mass, the Snezhnika glacieret. Until 1942 Vihren was known as Eltepe ; it was also called Buren (stormy) and Malnienosets (lightning-bringer). The UNESCO World Heritage Site Pirin National Park was originally known as the Vihren National Park. Vihren is included in the 100 Tourist Sites of Bulgaria under No. 2.
Dzhengal is a peak in the Pirin mountain range, south-western Bulgaria. It is located in the Pirin National Park, a UNESCO World Heritage Site.
The following outline is provided as an overview of and topical guide to Bulgaria:
Yozola Glacier is the 5 km long and 1.7 km wide glacier in the Sofia University Mountains situated in the northern portion of Alexander Island in Antarctica, and draining north-northwestwards between Mount Braun and Balan Ridge to flow into Palestrina Glacier.
Duhlata is a cave situated in Vitosha mountain, western Bulgaria. With a total length of 18,200 m, Duhlata is the second longest cave in the country. It was declared a natural monument in 1962. The cave is home to six species of bats.
